Joseph e



(No Model.)

J. E, BOHNBR. EXTENSION GHANDELIER.

1\Io.482,712A Patented Sept. 13, 1892.

NITED STATES PATENT Ormea.

JOSEPH E. BOHNER, OF ANSONIA, CONNECTICUT, ASSIGNOR TO vWALLACE & SONS,OF SAME PLACE.

EXTENSION-CHANDELIER.

SPECIFICATION forming part of Letters Patent N0. 482,712, datedSeptember 13, `1892.

Application filed April 2, 1892. 4Serial No. 427,563. (No model.)

To all whom t may concern,.-

Be it knownthat I, JOSEPH E. BOHNER, a citizen of the United States,residing at Ansonia, in the county of New Haven and State 5 ofConnecticut, have invented certain new` and useful Improvements inExtension-Chan` I5 chandeliers which consist generally of two telescopictubes adapted to be attached, respectively, to the ceiling and to thecrossarms or lampsupports, the latter being con nected to a spring-drumoperating to counzo terbalance, or nearly so, the weight of the lowertube and its carried parts.

The object of the invention is to produce a simple and cheap lockingVmechanism for such a chandelier, which mechanism is adapted to z5 fix orsecure the telescoping tubes relatively and at any desired point oftheir movement one upon the other.

The invention consists of a locking device arranged within the uppertube, which is composed of a suspension connection extending` from theceiling and ixedly attached to the lower tube, a locking-rod verticallyspringoperated and carried on the lower tube, and a toggle or linkarranged between the suspension connectionand the upper end of thelocking-rod, which toggle is operated by the upward pressure of the rodto spread or separate the rod and the adjacent part of the suspensiondevice and cause the same to engage 4o the inner surface of the uppertube.

In the drawings, Figure l is a central sectional view of one form ofchandelier embodying my invention. Fig. 2 is a like section of a portionof the telescoping tubes, this ,view

showing a modied form of locking device.

Figs. 3 and 4 are detail views of another modified form of a part of thelocking device and of a part of the locking device of Fig. 1, ashereinafter will be more fully explained.

A represents the inner tube of the chandelier, which is secured to theceiling above in any of the well-known ways.

B is the outer tube, movable freely on the inner tube and which extendsdownwardly and carries the cross-arms C, which support the lamps.

In the lower end of the outer tube is secured the disk D, to which isfixedly attached the lower end of rod F. To the upper end of this rodand within the tube A is connected 6o the suspension-chain G, whichextends to a spring-drum in the canopy II near the ceiling.

I is a tubular slide on the tube B, which carries the finger knobs J,through which 65 and through slots K in the tube B pass screws L, thatenter the slide-disk M within tube B, and thus secure the disk to theexterior slide.

A spring Nwithin the tube B acts to push the slide upwardly, this springbeing held 7o to position against the slide-disk and within the tube bya hand-knob O, screwed on the lower end of the tube.

To the slide-disk M is lixed the rod P, which extends to aheight aboutthe same as that of the outer tube. At this point the rods E and P areconnected bythe toggle or link Q, each end of which is pivotallyattached to one of the rods. The length of this link is such that itcannot come to a position at right angles to 8o the rods by reason ofthe rods coming in contact with theinner surface of the upper tube.

R represents a pointed or edged lugor projection on the rodvF, which isdesigned to sharply engage the surface of the inner tube, so as toinsure a certain hold of the rod upon the tube.

S is a circular plug-disk carried upon the rod E and which has a slot T,through which freely passes the rodV P. (See Fig. 4, which is a planview of this disk.) This plugdiskprac- 9o tically fills the tube A andserves to prevent it being spread out of circular form by the engagementthereof of the rods F and P, thereby also assisting to prevent the rodslosing their hold upon the tube.

The operation will now be plain, it being understood that the spring Nat the lower end of the outer tube acts constantly to press up themovable or locking rod P. Then it will be seen that this upward pressureacts to rock loo or tilt the link connecting the rods at their upperends, and thus to force the movable rod to engagement with the uppertube, the stationary rod of course being also equally forced to engagingcontact with the tube. To unlock the rods from engagement with the uppertube, the movable or locking rod is pulled down relatively to the otherrod. This is conveniently effected and the chandelier at the same timekept under control by the person operating the locking mechanism placinghis hand with the palm on the knob O and pulling on the finger-knobs Jwith his extended fingers. Thus the locking mechanism can readily bereleased and the chandelier raised or lowered at will. It is to beparticularly noticed that the suspension devices are ixedly attached tothe lower` tube in such manner that the lug R or other portion of theconnections which engages the upper tube is not vertically movablerelatively to the lower tube or against the tension of the suspensiondevices. It is to be noted that the rod F is in effect but an inflexibleconstruction ofthe suspension-chain to the lower tube. This is not anessential feature of construction, as the link Q could as well besecured to the chain itself, as will be described of Fig. 3; but by theuse of the rod the desired rigidity of the locking parts where theyengage the upper tube is more easily effected and facility in assemblingthe parts, is secured.

In Fig. 2 I illustrate the movable and stationary rods as constructedwithout engaging lugs or teeth. In this case the extended bearing of therods engages the upper tube yby frictional contact. The link U betweenthe rods for separating the same is here shown as held between rods byits ends resting in recesses in the rods in such manner that the linkhas a pivotal action on and relative to the rods.

In Fig. 3 I show another moditication of the locking parts. Here atoothed or notched dog V is inserted in the suspension-chain, whichcontinues to the lower end of and is secured to the movable tube. To themovable rod W, correspondingto rodP of Fig. 1,is secured the slidingblock or plug X, which is of cylindrical form and of about the diameterof the bore of the upper tube. This plug is also slotted to looselyreceive the dog U, to which it is pivotally attached by the toggle orlink Y. It Will now appear that by the movement up and down of the rod Wthe dogVis forced to engage the upper tube and lock the same relativelyto the lower tube.

I am aware that it has been proposed to use dogs, links, cams, wedges,and various like devices adapted to lock the lower or movable tube of achandelier upon the upper or stationary tube, and I do not broadly claimany such device or devices. My invention, as contradistinguished fromthese devlces, comprehends an extensible suspension connection soarranged as to constitute one of the locking parts and also arranged asnot to have vertical. motion relatively to the lower tube, and alocking-rod carried by the lower tube and movably supported thereon, anda link or like device arranged between the supporting connections andsaid rod and adapted by the vertical movement of the rod to cause thelatter and the connections to engage the upper' tube, by which means thelocking and unlocking of the parts can be effected without the necessityof lifting the lower tube and the chandelier carried thereon and Withoutaffecting the tension of the suspension devices.

What is claimed as new isl. In combination, in an extension-chandelier,an upper stationary tube and a lower tube movable thereon and adapted tocarry the lamp supports, an extensible suspension connection arrangedWithin the tubes and adapted to permit their relative. movement one onthe other, which connection is constructed and attached to the lowertube, so as to only have movement therewith, a locking-rod projecting towithin the upper tube and carried by and vertically movable on the lowertube, and a link located within the upper tube and arranged between thelocking-rod and the suspension connections and adapted to force the rodand said connections to engaging contact with the upper tube,substantially as set forth.

2. In combination, the upper stationary tube A and the lower tube B,adjustable thereon,.extensible suspension connections, as chain G androd F, arranged within the tubes and attached tothe lower tube to moveonly therewith, the locking-rod P, vertically movable on the lower tubeand projecting to within the upper tube, the spring N, acting to pressthe rod upwardly, and a link or toggle Q, arranged between the rods Fand P and adapted to separatesaid `rods and permit them to come togetherby the vertical movement of rod P, whereby the rods are brought toengaging contact with the upper tube and released therefrom,substantially as set forth.

JOSEPH E. BOHNER.

Vitnesses:

F. L. GAYLQRD, W. N. Braces.

